Circulatory system for refrigerated counters



Aug. il, 1931. L K, BOND l,88,034

CIRCULATORY SYSTEM FOR REFRIGERATD COUNTERS Filed Feb. 28, 1929 2Sheets-Sheet l ,9 Mt x INVENTOR.

0 y pay. 16M

A TTORNEY.

Patented Aug. 11, 1931 l UNITED STATES lrA'r'Ewrr orrlcr.

i I Jayson n. norm, or mnwnuxnngwrsconsm CIRCULATORY SYSTEM FORREFRIGERATED COUNTEBS Application led February 28, 1929. Serial No.343,356.

This invention relates to improvements coolers, and its parts andcombinations as in circulatory systems for refrigerated countset forthin the claims, and all equivalents ers. thereof.

This invention relates to improvements in In the accompanying drawingsin which circulatory systems for refrigerated counters. the samereference characters indicate the 5@ It is one of the objects of thepresent insame parts yin all of the views: vention to provide arefrigerated counter in Fig. l is a cross-sectional view of a refrig-Which the misting or deposits of moisture on erated display counter orcooler illustrating lo lthe front glass is eliminated whereby vision theimproved circulatory systemtherefor;

A further object of the invention is to proview taken on line 2-2 ofFig. l; vide 'a refrigerated display counter or cooler Fi 3 is across-sectional view illustrathaving a circulating system of such aeliaring t e circulatory system applied to a modiacter that moistureladen air from the room, fied form of counter or case; and which enterswhen the counter door is opened, Fig. 4 is a vertical longitudinalsectional 60 is carried directly to the cooling coils before viewthereof taken on line '1 4 of Fig. 3. it can come into contact with thecold glass Referring tothe drawings and'particularly front of thecounter, whereby condensation to Figs. 1 and 2 thereof, 1t willappearthat is minimized. I the numeral '8 indicates a refrigerated dis-A further object of the invention isto proplay counter or cooler whichis mounted on 65 vide a refrigerated counter in which the movsupportinglegs 9. The counter has a slightly ing air, with a capacity formoisture, does not forwardly inclined insulated bottom 10, an come intodirect contact with the counter conangularly extending glazed frontportion 11,

A, tents, whereby meats or perishables therem slidable entrance doors 12`forming an upare not dried out or dehydrated. per rear portion, aninsulated lower rear por- 70 A. further object of the invention istopro- 'tion 13, and a top ortion 14. Within the vide a refrigerateddisplay counter of the counter, inwardly o the lower rear portion Aclass described in which the counter contents l13 is an enclosedcompartment 15 in which are entirely surrounded by, but not -in contactis a longitudinally extending coil'lt for the with, cold air in motion.purpose of cooling the interior o f the counter. '35

into the counter or case is not obstructed. Fig. 2 is a verticallongitudinal sectional 55 A further object'of the invention is' to pro-Extending across the width ofthe bottom vide a refrigerated displaycounterof the portion 10 of the counter, and longitudinally classdescribed in 'which the air is caused to of the same, is atray 17 suported above said 3 move upwardly the full height of the front bottomportion by space apart transverse vision glass of the case and said airwill ablegs 18. The front edge portion of sald tray @il sorb anymoisture which might be. on the is formed with a, longitudinal row o fspaced glass. apertures 19 for the passage of alr there- A furtherobject of the invention is to pro# through and immediately rearwardly ofsaid vide a circulatory system for refrigerated apertures isalowvertical baille wall 22. The

counters'V which is very simple in construcrear portion of said tray isformed with a ver` 35 tion, is ecient, and .is well adapted for Vthetical wall 20 closing the front of the coil cornpurposes described. y partment 15 and said wall is secured at its. With the above and otherobjects in view upperedge to an upper rail 21 of sald comthe inventionconsists of' the improved cirpartment. l

'culatory 'system for refrigerated counters or The lower end portions,of a plurality of 9 ues or chimneys 23 open through said wall 20 intothe upper front portion of the coil compartment 15. Said lues extendparallel with the rear doors 12, inwardly of the same, and the openupper end portions of the lues terminate below an upper lightcompartment 24, and are joined by an elongated, longitudinally extendingtrough 25, of angular shape in cross-section, and which abuts at itsinner edge against atop rail 26, preventing ow o f air behind thetrough. v

'It will thus be seen that 1n the counterthe coil compartment isentirely closed except for the entrance at the upper front portion bythe several liues 23 and at the lower front portion an exit is formed tothe ducts between the tray 17 and insulated bottom 10. The result ofthis arrangement is that air is cooled by the coils in the compartmentand naturally falls and is also pushed downwardly by the column of air.,thereabove and then travels forwardly in the slightly ir!- clined ductbelow the tray. The cooled air .may then escape throu h the openings 191n the forward portion o the tray and travels upwardly, as it becomeswarmer, along the full height of the front glass 11 tothe top of thecounter. Here the air is arrested by the trough and is carriedtherealong to the .open upper ends of the flues 23 where suction, causedb downwardly moving air in the lues an compartmentV 15, draws the airdownwardly in, the flues to the coil compartment to be again cooled.

Obviouslyz as shown by the arrows in Fig.

1, the direction of circulation is downwardl from the coils in aninclosed space, and then forwardly at a slight downward angle tolthe-front of the counter, and then upwardly in roximity to the glass tothe trou h and then ownwardly to the coils. When t e counter entrancedoors are opened there is a rush of warm air into the upper portion ofthe case. This air, being warm, will rise andis arrested by the currentin the trough and .verylittle, consequently, reaches the front glass tomist the same. nenes, moisture laden air from the room is quicklycarried to the coils and condensation is minimized. lIf, however, warmair does reach the front glass, due to the doors being-left open toolong, it is g'luickly picked up by ,the air current there- Agfurtheradvantage of the counter circulatory system lies in the fact that thecircu- .lation is around, but not in direct contact with, meat orperishables on the tray, whereby deirydrating is eliminated.

In lgs. 3 and 4 of the drawings the invention has been illustrated inconnection with a counter having a lower storage'compartment in additionto the upper displa compartment 28. The lower portion of t is counterhas insulated end and front walls 29 and 30,

sim le, novel and eicient, and is well adapt-4 ed or the purposesdescrlbed.

What is'claimed as the invention is: v

1. In a refrigerated display counter, an angular duct therewithin andopening into the interior of the counter at its lower forward portion, acooling medium within a portion of said duct, a pair ofseparated fluesentering said duct remote from its o en end portion and extendinupwardly wit in said counter, and a ltroug connecting the upper portionsof said fines.

2. In' a refrigerated display counter havingl a display compartment, arear enclosed refrigerant chamber, a tray forming the bottom portion ofsaid display compartment and having a rear vertical wall closing thefront of said refrigerant chamber, said chamber being open below thetray and the front end portion of the tray having an air dischargeopening, a pair of separated flues extending from an upper portion ofsaid display compartment along the rear thereof and opening into saidrefrigerant chamber above the dischargeend portion of said tray, theupper end portions of said Hues being open, and a trough connecting theopen upper end portions of said Hues.

3. In a refrigerated display counter, a cooling chamber along the rearthereof and a substantial distancebelow the upper portion of-saidcounter, said chamber being entirely enclosed but having an upper inletopeningl and a lower outlet opening, a cold fluid duct extendlngforwardly within said counter from sa1d outlet opening, the forward end`portion of said duct having an outlet opening, and a downwardly,rearwardly directed Huid conductor within the rear portion ofsaid-counter'and entering said' chamber inlet opening, the outer endportion of said conductor having an opening therein relatively close tothe top ofthe counter. 4. In .a refrigerated display counter having adlsplay compartment, a'rear enclosed refrigerant chamber, a slightlyforwardly inclined tray having front outlet openings and extendinglongitudinally of the counter and forming the bottom portion 'of saiddisplay compartment, the rear edge portion of said tray meeting thefront enclosm wall of the llo refrigerant chamber, said encloslng wallhaving a pair of spaced upper inlet openings and lower outlet opening todischarge luld below said tray, a air of separated dovlv'nwnrd` iydirected ui conductors within the rear portion of said ounter andenterin said chamber inlet openings, the outer en portions oi saidconductors being open and a longitudinally extending. trough witiiin theupper rear portion of the display compartment and joining the open upperend portions of said Conductors.

In testimony whereof I ax my signature.

o JAYsoN K. BOND.

:nsA

